Oil Change
Race Director
Joined: Jul 2007
Posts: 11,467
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From: 972 and 405
Drifting
Joined: Jan 2005
Posts: 1,496
Likes: 28
From: San Dimas Ca.
You are supposed to use synthetic. Mobil 1 comes in it from the factory. I would be very upset if they put regular oil in my C5. Go back and have them drain the regular oil and put in synthetic tomorrow.
Rick
Rick
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
You do not need Mobil 1. you ned a synthetic oil that meets GM4718M
IF they put in a non GM4718M oil have it cahnged immediatley and have the dealership document in writing that they erred.
IF they put in a non GM4718M oil have it cahnged immediatley and have the dealership document in writing that they erred.
Burning Brakes
Joined: Apr 2007
Posts: 763
Likes: 1
From: Oceanside Ca
"they"?
Who the heck is "THEY" anyway? "THEY" don't sound smart enough to be changing your C-5's oil. GEEZZ, go to Wally World(WalMart) and buy the Mobil One on sale and just use it, that is what Bowling Green wants you to use. And I am certain that Bowling Green probably is frowning on the fact that you had "THEY" change your oil. Harley and Zora are certainly spinning in their graves at the thought of "THEY" changing your oil.
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The C5 should have synthetic oil in it. If they put conventional oil in there, take it back and have them put the right stuff in there.
Race Director
Joined: Aug 2001
Posts: 10,783
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From: Hurricane Alley
Team Owner
Joined: May 2006
Posts: 21,473
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
REMOVE and RELACE W/ Synthetic!
It's better for our motors and if you have a warranty it is the recommended type to use!
Thanks,Matt
It's better for our motors and if you have a warranty it is the recommended type to use!
Thanks,Matt
Drifting
Joined: Jan 2006
Posts: 1,849
Likes: 0
From: Philadelphia PA
Who the heck is "THEY" anyway? "THEY" don't sound smart enough to be changing your C-5's oil. GEEZZ, go to Wally World(WalMart) and buy the Mobil One on sale and just use it, that is what Bowling Green wants you to use. And I am certain that Bowling Green probably is frowning on the fact that you had "THEY" change your oil. Harley and Zora are certainly spinning in their graves at the thought of "THEY" changing your oil.
Beat me to it.
Melting Slicks
Joined: Dec 2006
Posts: 2,308
Likes: 104
From: Orange County California
"THEY" changed my friends C5 oil and put in non-synthetic. 8,000 miles later, the engine failed. GM did a test and found traces of regular oil, and would not honor the warranty. My friend sued "THEM" and won (he's an attorney, though), and got a new engine at 38,000 miles.
Better get "THEIR" flub in writing, if it indeed was non-synthetic oil.
Good luck.
Better get "THEIR" flub in writing, if it indeed was non-synthetic oil.
Good luck.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
Drain and refill with an approved synthetic oil.
The reason GM specified synthetic oil for the C5 is because they were too cheap to put in an oil cooler. Oil temperatures in a C5 run too high for normal oil, but synthetic oil can take the higher temperatures.
You are risking engine damage with regular oil !
The reason GM specified synthetic oil for the C5 is because they were too cheap to put in an oil cooler. Oil temperatures in a C5 run too high for normal oil, but synthetic oil can take the higher temperatures.
You are risking engine damage with regular oil !
